<h2>No validation</h2>
<textarea id="editor1"></textarea>

<h2>Validation</h2>
<textarea id="editor2"></textarea>
<script>
	CKEDITOR.replace( 'editor1' );
	CKEDITOR.replace( 'editor2', {
		linkPhoneRegExp: /^[0-9]{9}$/,
		linkPhoneMsg: 'Invalid number'
	} );
</script>
